Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Phase Formation and Thermo-physical Properties of GdO1.5-ZrO2 System for Thermal Barrier Coating Application

열차폐코팅용 GdO1.5-ZrO2계 희토류 지르코네이트 세라믹스의 상형성과 열물리 특성

  • Kim, Sun-Joo (Engineering Ceramic Team, Korea Institute of Ceramic Engineering & Technology) ;
  • Lee, Won-Jun (Engineering Ceramic Team, Korea Institute of Ceramic Engineering & Technology) ;
  • Kwon, Chang-Sup (Engineering Ceramic Team, Korea Institute of Ceramic Engineering & Technology) ;
  • Lee, Sung-Min (Engineering Ceramic Team, Korea Institute of Ceramic Engineering & Technology) ;
  • Oh, Yoon-Suk (Engineering Ceramic Team, Korea Institute of Ceramic Engineering & Technology) ;
  • Kim, Hyung-Tae (Engineering Ceramic Team, Korea Institute of Ceramic Engineering & Technology) ;
  • Im, Dae-Soon (Department of Materials Science and Engineering, Korea University) ;
  • Kim, Seongwon (Engineering Ceramic Team, Korea Institute of Ceramic Engineering & Technology)
  • 김선주 (한국세라믹기술원 이천분원 엔지니어링세라믹팀) ;
  • 이원준 (한국세라믹기술원 이천분원 엔지니어링세라믹팀) ;
  • 권창섭 (한국세라믹기술원 이천분원 엔지니어링세라믹팀) ;
  • 이성민 (한국세라믹기술원 이천분원 엔지니어링세라믹팀) ;
  • 오윤석 (한국세라믹기술원 이천분원 엔지니어링세라믹팀) ;
  • 김형태 (한국세라믹기술원 이천분원 엔지니어링세라믹팀) ;
  • 임대순 (고려대학교 신소재공학과) ;
  • 김성원 (한국세라믹기술원 이천분원 엔지니어링세라믹팀)
  • Received : 2014.11.07
  • Accepted : 2014.11.21
  • Published : 2014.11.30
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Abstract

Gadolinium zirconate, $Gd_2Zr_2O_7$, is one of the most promising candidates for replacing yttira-stabilized zirconia (YSZ) in thermal barrier coating (TBC) applications due to its low thermal conductivity and chemical stability at high temperature. In this study, rare-earth zirconate ceramics in the $GdO_{1.5}-ZrO_2$ system with reduced gadolinia contents were fabricated via solid-state reaction as well as hot-pressing at $1800^{\circ}C$. The phase formation, microstructure, and thermo-physical properties of these oxides were examined. The potential application of $GdO_{1.5}-ZrO_2$ ceramics for TBC was also discussed.

Keywords

References

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